safety guard

基本解释

Supply and maintain the lighting or other facilities used in daytime, and be responsible for safety guard.
提供和维修非夜间施工使用的照明或其它设施，并负责安全保卫。
This article introduces a safety guard system with functions of online patrol management, access control and alarm monitoring.
本文介绍了一种集在线式巡逻管理、门禁和报警功能于一体的安全防范系统。
There are plenty of accidents and many overturned buses on a yearly basis. There are sheer drop offs of more than 1000 feet without a safety guard rail.
每年都会发生大量的事故，包括车辆倾翻，在没有安全护栏的情况下，汽车坠落可达1000英尺。

Sometimes they're reluctant to take part in important training such as fire safety classes and child identification programs, which guard against abduction.

The safety guard that was on the grinder when it left the factory in 1961 was sawed off some years later.
FORBES: Magazine Article